Research Article
Evaluating the Effect of Calcination and Grinding of Corn Stalk Ash on Pozzolanic Potential for Sustainable Cement-Based Materials
Table 5
Mix proportion and compressive strength of corn stalk ash at different grinding times (w/c ratio = 0.4).
| s | (%), CSA | 7 days compressive strength (MPa) | PAI | 28 days compressive strength (MPa) | PAI |
| M0 | 0 | 35.25 | 100.0 | 39 | 100.0 | G0 | 10 | 11 | 31.2 | 25.2 | 64.6 | G30 | 10 | 25.51 | 75.2 | 37.5 | 96.8 | G60 | 10 | 26.93 | 76.4 | 38.25 | 98.1 | G120 | 10 | 27.25 | 77.3 | 42.25 | 108.3 | G240 | 10 | 30.5 | 86.5 | 42.75 | 109.6 |
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